<template>
	<section>
		<!--工具条-->
		<el-col :span="24" class="toolbar" style="padding-bottom: 0px;">
			<el-form :inline="true" :model="filters">
				<el-form-item>
					<el-input v-model="keyword" placeholder="请输入关键字"></el-input>
				</el-form-item>
				<el-form-item>
					<el-button type="primary" v-on:click="keywordQuery">查询</el-button>
				</el-form-item>
				<el-form-item>
					<el-button type="primary" @click="handleAdd">新增</el-button>
				</el-form-item>
			</el-form>
		</el-col>

		<!--列表-->
		<el-table :data="menus" highlight-current-row v-loading="listLoading" @selection-change="selsChange" style="width: 100%;">
			<el-table-column type="selection" width="55">
			</el-table-column>
			<el-table-column type="index" width="60">
			</el-table-column>

      <el-table-column prop="name" label="菜单名称" width="120"></el-table-column>

      <el-table-column prop="component" label="组件" width="300"></el-table-column>

      <el-table-column prop="url" label="链接" width="120"></el-table-column>

      <el-table-column prop="index" label="索引" width="100"></el-table-column>

      <el-table-column prop="parent.name" label="上级菜单" width="200" ></el-table-column>

      <el-table-column prop="state" label="状态" width="100">
        <template scope="scope">
          <span v-if = "scope.row.state==1" style = "color: green">启用</span>
          <span v-else style = "color: red">禁用</span>
        </template>
      </el-table-column>

      <el-table-column label="操作">
				<template scope="scope">
					<el-button size="small" @click="handleSave(scope.$index, scope.row)">编辑</el-button>
					<el-button type="danger" size="small" @click="handleDel(scope.$index, scope.row)">删除</el-button>
				</template>
			</el-table-column>


		</el-table>

		<!--工具条-->
		<el-col :span="24" class="toolbar">
			<el-button type="danger" @click="batchRemove" :disabled="this.sels.length===0">批量删除</el-button>
			<el-pagination layout="prev, pager, next" @current-change="handleCurrentChange" :page-size="pageSize" :total="totals" :current-page="currentPage" style="float:right;">
			</el-pagination>
		</el-col>

		<!--编辑界面-->
		<el-dialog :title="title" :visible.sync="saveFormVisible" :close-on-click-modal="false">
			<el-form :model="saveForm" label-width="80px" :rules="saveFormRules" ref="saveForm">

        <el-form-item label="菜单名称" prop="name">
          <el-input v-model="saveForm.name" auto-complete="off"></el-input>
        </el-form-item>

        <el-form-item label="组件" prop="component">
          <el-input v-model="saveForm.component" auto-complete="off"></el-input>
        </el-form-item>

        <el-form-item label="链接" prop="url">
          <el-input v-model="saveForm.url" auto-complete="off"></el-input>
        </el-form-item>

        <el-form-item label="索引" prop="url">
          <el-input v-model="saveForm.index" auto-complete="off"></el-input>
        </el-form-item>

        <el-form-item label="上级菜单">
          <el-cascader v-model="saveForm.parent_id"
                       :options="menuTree"
                       :props="{ checkStrictly: true, label: 'name', value: 'id'}"
                       clearable></el-cascader>
        </el-form-item>

        <el-form-item label="状态">
          <el-radio-group v-model="saveForm.state">
            <el-radio class="radio" :label="1">启用</el-radio>
            <el-radio class="radio" :label="0">禁用</el-radio>
          </el-radio-group>
        </el-form-item>


      </el-form>

			<div slot="footer" class="dialog-footer">
				<el-button @click.native="saveFormVisible = false">取消</el-button>
				<el-button type="primary" @click.native="saveSubmit" :loading="saveLoading">提交</el-button>
			</div>
		</el-dialog>
	</section>
</template>

<script>
	export default {
		data() {
			return {
				menus: [],
				totals: 0,
				currentPage: 1,
        pageSize: 5,
				listLoading: false,
        keyword:'',

        filters: {
				  name:''
        },

        menuTree: [],

        sels: [],//列表选中列

				saveFormVisible: false,//编辑界面是否显示
        title: '',
				saveLoading: false,
				saveFormRules: {
          name: [
            { required: true, message: '请输入菜单姓名', trigger: 'blur' }
          ]
				},
				//编辑界面数据
				saveForm: {
          id: null,
          name: '',
          component: '',
          url: '',
          icon: '',
          index: null,
          parent_id: null,
          state: 1
        }

			}
		},
		methods: {
			//获取菜单列表
			getMenus() {
				let paras = {
					currentPage: this.currentPage,
					pageSize: this.pageSize,
          keyword: this.keyword
				};
				// 发送请求之前就让加载框显示出来
				this.listLoading = true;

				this.$http.post("/menu", paras).then(res=>{
				  this.totals = res.data.totals;
          this.menus = res.data.data;
          this.listLoading = false;
        }).catch(res=>{
          this.$message.error("系统繁忙，请稍后重试")
        })
			},

      handleCurrentChange(val){
        this.currentPage = val;
        this.getMenus();
      },

      keywordQuery(){
			  this.currentPage = 1;
			  this.getMenus();
      },



      //删除
      handleDel: function (index, row) {
        this.$confirm('确认删除该记录吗?', '提示', {
          type: 'warning'
        }).then(() => {
          this.listLoading = true;
          this.$http.delete("/menu/" + row.id).then(res => {
            if(res.data.success){
              // 计算总页数
              let totalPage = Math.ceil(this.totals/this.pageSize);
              if(this.currentPage == totalPage
                  && (this.totals - 1)%this.pageSize == 0
                  && this.currentPage != 1){
                this.currentPage = this.currentPage - 1;
              }
              this.getMenus();
            }else {
              this.$message.error("系统繁忙")
            }
            this.listLoading = false;
          }).catch(res => {
            this.$message.error("系统繁忙")
          })
        }).catch(() => {
          this.$message.error("系统繁忙")
        });
      },

      //批量删除
      batchRemove: function () {
        var ids = this.sels.map(item => item.id);
        this.$confirm('确认删除选中记吗录？', '提示', {
          type: 'warning'
        }).then(() => {
          this.listLoading = true;
          this.$http.patch("/menu", ids).then(res=>{
            if (res.data.success){
              this.currentPage = 1;
              this.getMenus();
            }else {
              this.$message.error("系统繁忙【500】")
            }
            this.listLoading = false;
          }).catch(res=>{
            this.$message.error("系统繁忙【400，404】")
          })
        }).catch(() => {

        });
      },

			//显示编辑界面
			handleSave: function (index, row) {
				this.saveFormVisible = true;
        this.title = "修改";
				this.saveForm = Object.assign({}, row);
        this.getMenuTree();
			},
			//显示新增界面
			handleAdd: function () {
        this.getMenuTree();
				this.saveFormVisible = true;
				this.title = "新增";
				this.saveForm = {
          id: null,
          name: '',
          component: '',
          url: '',
          icon: '',
          index: null,
          parent_id: null,
          state: 1
				};
			},
			//编辑
			saveSubmit: function () {
				this.$refs.saveForm.validate((valid) => {
					if (valid) {
						this.$confirm('确认提交吗？', '提示', {}).then(() => {
							this.saveLoading = true;

							this.saveForm.parent_id = this.saveForm.parent_id[this.saveForm.parent_id.length - 1]
							this.$http.put("/menu", this.saveForm).then(res=>{
							  if (res.data.success) {
                  this.saveLoading = false;
                  this.getMenus();
                }else {
                  this.$message.error("操作失败500");
                }
              }).catch(res=>{
                  this.$message.error("操作失败404")
              })
              this.saveFormVisible = false;
						});
					}
				});
			},
			selsChange: function (sels) {
				this.sels = sels;
			},

      // 获取菜单树
      getMenuTree(){
        this.$http.get("/menu/menuTree").then(res=>{
          this.menuTree = res.data;
        })
      },

		},
		mounted() {
			this.getMenus();
		}
	}

</script>

<style scoped>

</style>